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package dep;

import java.awt.AWTEvent;
import java.awt.Component;
import java.awt.EventQueue;
import java.awt.Point;
import java.awt.Toolkit;
import java.awt.datatransfer.DataFlavor;
import java.awt.datatransfer.Transferable;
import java.awt.event.ActionEvent;
import java.awt.event.MouseEvent;
import javax.swing.AbstractAction;
import javax.swing.JPopupMenu;
import javax.swing.MenuSelectionManager;
import javax.swing.SwingUtilities;
import javax.swing.text.JTextComponent;

/**
 *
 * @author xyBerWise
 */
// @author Santhosh Kumar T - santhosh@in.fiorano.com 
public class rightClickmenu extends EventQueue {

    @Override
    protected void dispatchEvent(AWTEvent event) {
        super.dispatchEvent(event);

        // interested only in mouseevents 
        if (!(event instanceof MouseEvent)) {
            return;
        }

        MouseEvent me = (MouseEvent) event;

        // interested only in popuptriggers 
        if (!me.isPopupTrigger()) {
            return;
        }

        // me.getComponent(...) retunrs the heavy weight component on which event occured 
        Component comp = SwingUtilities.getDeepestComponentAt(me.getComponent(), me.getX(), me.getY());

        // interested only in textcomponents 
        if (!(comp instanceof JTextComponent)) {
            return;
        }

        // no popup shown by user code 
        if (MenuSelectionManager.defaultManager().getSelectedPath().length > 0) {
            return;
        }

        // create popup menu and show 
        JTextComponent tc = (JTextComponent) comp;
        JPopupMenu menu = new JPopupMenu();
        menu.add(new CutAction(tc));
        menu.add(new CopyAction(tc));
        menu.add(new PasteAction(tc));
        menu.add(new DeleteAction(tc));
        menu.addSeparator();
        menu.add(new SelectAllAction(tc));

        Point pt = SwingUtilities.convertPoint(me.getComponent(), me.getPoint(), tc);
        menu.show(tc, pt.x, pt.y);
    }
}

// @author Santhosh Kumar T - santhosh@in.fiorano.com 
class DeleteAction extends AbstractAction {

    JTextComponent comp;

    public DeleteAction(JTextComponent comp) {
        super("Delete");
        this.comp = comp;
    }

    public void actionPerformed(ActionEvent e) {
        comp.replaceSelection(null);
    }

    public boolean isEnabled() {
        return comp.isEditable()
                && comp.isEnabled()
                && comp.getSelectedText() != null;
    }
}

// @author Santhosh Kumar T - santhosh@in.fiorano.com 
class CopyAction extends AbstractAction {

    JTextComponent comp;

    public CopyAction(JTextComponent comp) {
        super("Copy");
        this.comp = comp;
    }

    public void actionPerformed(ActionEvent e) {
        comp.copy();
    }

    public boolean isEnabled() {
        return comp.isEnabled()
                && comp.getSelectedText() != null;
    }
}

// @author Santhosh Kumar T - santhosh@in.fiorano.com 
class SelectAllAction extends AbstractAction {

    JTextComponent comp;

    public SelectAllAction(JTextComponent comp) {
        super("Select All");
        this.comp = comp;
    }

    @Override
    public void actionPerformed(ActionEvent e) {
        comp.selectAll();
    }

    @Override
    public boolean isEnabled() {
        return comp.isEnabled()
                && comp.getText().length() > 0;
    }
}
// @author Santhosh Kumar T - santhosh@in.fiorano.com 

class CutAction extends AbstractAction {

    JTextComponent comp;

    public CutAction(JTextComponent comp) {
        super("Cut");
        this.comp = comp;
    }

    @Override
    public void actionPerformed(ActionEvent e) {
        comp.cut();
    }

    @Override
    public boolean isEnabled() {
        return comp.isEditable()
                && comp.isEnabled()
                && comp.getSelectedText() != null;
    }
}

// @author Santhosh Kumar T - santhosh@in.fiorano.com 
class PasteAction extends AbstractAction {

    JTextComponent comp;

    public PasteAction(JTextComponent comp) {
        super("Paste");
        this.comp = comp;
    }

    @Override
    public void actionPerformed(ActionEvent e) {
        comp.paste();
    }

    @Override
    public boolean isEnabled() {
        if (comp.isEditable() && comp.isEnabled()) {
            Transferable contents = Toolkit.getDefaultToolkit().getSystemClipboard().getContents(this);
            return contents.isDataFlavorSupported(DataFlavor.stringFlavor);
        } else {
            return false;
        }
    }
}
